ABAP Select data from SAP table EINVREQ001QR_APPL_IN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EINVREQ001QR_APPL_IN table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to EINVREQ001QR_APPL_IN. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the EINVREQ001QR_APPL_IN table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_EINVREQ001QR_APPL_IN TYPE STANDARD TABLE OF EINVREQ001QR_APPL_IN,
      WA_EINVREQ001QR_APPL_IN TYPE EINVREQ001QR_APPL_IN,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <EINVREQ001QR_APPL_IN> TYPE EINVREQ001QR_APPL_IN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EINVREQ001QR_APPL_IN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EINVREQ001QR_APPL_IN
  INTO TABLE IT_EINVREQ001QR_APPL_IN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EINVREQ001QR_APPL_IN
*  INTO TABLE @DATA(IT_EINVREQ001QR_APPL_IN2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_EINVREQ001QR_APPL_IN INDEX 1 INTO DATA(WA_EINVREQ001QR_APPL_IN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EINVREQ001QR_APPL_IN ASSIGNING <EINVREQ001QR_APPL_IN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EINVREQ001QR_APPL_IN>-BUSINESSPARTNER = 1.
<EINVREQ001QR_APPL_IN>-CONTRACTACCOUNT = 1.
<EINVREQ001QR_APPL_IN>-CONTRACT = 1.
<EINVREQ001QR_APPL_IN>-DIVISIONCODE = 1.
<EINVREQ001QR_APPL_IN>-SIMULATIONTYPECODE = 1.

ENDLOOP.

LOOP AT IT_EINVREQ001QR_APPL_IN INTO WA_EINVREQ001QR_APPL_IN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EINVREQ001QR_APPL_IN-STARTDATE, sy-vline,
  WA_EINVREQ001QR_APPL_IN-ENDDATE, sy-vline,
  WA_EINVREQ001QR_APPL_IN-BILLINGPERIOD, sy-vline,
  WA_EINVREQ001QR_APPL_IN-NOTRELEASED, sy-vline,
  WA_EINVREQ001QR_APPL_IN-VALIDATIONCODE, sy-vline,
  WA_EINVREQ001QR_APPL_IN-MANUALVALIDATIONCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EINVREQ001QR_APPL_IN you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_EINVREQ001QR_APPL_IN TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_EINVREQ001QR_APPL_IN INTO WA_EINVREQ001QR_APPL_IN.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EINVREQ001QR_APPL_IN-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EINVREQ001QR_APPL_IN-BUSINESSPARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONTRACTACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EINVREQ001QR_APPL_IN-CONTRACTACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EINVREQ001QR_APPL_IN-CONTRACTACCOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EINVREQ001QR_APPL_IN-CONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EINVREQ001QR_APPL_IN-CONTRACT.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_EINVREQ001QR_APPL_IN_STR, 
BUSINESSPARTNER TYPE STRING,
CONTRACTACCOUNT TYPE STRING,
CONTRACT TYPE STRING,
DIVISIONCODE TYPE STRING,
SIMULATIONTYPECODE TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
BILLINGPERIOD TYPE STRING,
NOTRELEASED TYPE STRING,
VALIDATIONCODE TYPE STRING,
MANUALVALIDATIONCODE TYPE STRING,
PROCESSINGCONDITIONS TYPE STRING,
QUERYMAXHITS TYPE STRING,
UNLIMITEDQUERYHITS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EINVREQ001QR_APPL_IN_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_EINVREQ001QR_APPL_IN_STR-BUSINESSPARTNER sy-vline 
WA_EINVREQ001QR_APPL_IN_STR-CONTRACTACCOUNT sy-vline 
WA_EINVREQ001QR_APPL_IN_STR-CONTRACT sy-vline 
WA_EINVREQ001QR_APPL_IN_STR-DIVISIONCODE sy-vline 
WA_EINVREQ001QR_APPL_IN_STR-SIMULATIONTYPECODE sy-vline 
WA_EINVREQ001QR_APPL_IN_STR-STARTDATE sy-vline 
WA_EINVREQ001QR_APPL_IN_STR-ENDDATE sy-vline 
WA_EINVREQ001QR_APPL_IN_STR-BILLINGPERIOD sy-vline 
WA_EINVREQ001QR_APPL_IN_STR-NOTRELEASED sy-vline 
WA_EINVREQ001QR_APPL_IN_STR-VALIDATIONCODE sy-vline 
WA_EINVREQ001QR_APPL_IN_STR-MANUALVALIDATIONCODE sy-vline 
WA_EINVREQ001QR_APPL_IN_STR-PROCESSINGCONDITIONS sy-vline 
WA_EINVREQ001QR_APPL_IN_STR-QUERYMAXHITS sy-vline 
WA_EINVREQ001QR_APPL_IN_STR-UNLIMITEDQUERYHITS sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.